| Below Low Mark | Oil level is dangerously low. The oil pump may begin drawing air instead of oil. | Sudden oil pressure drops, oil light flickering, increased engine wear, and potential timing issues (especially with VVT systems). | Top off immediately using the recommended oil grade. Check for leaks or excessive oil consumption. |
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| Between Low & Full (Safe Zone) | Proper operating range. Oil pressure should remain stable. | No immediate risk if oil is clean and within service interval. | No action needed. Continue regular monitoring. |
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| Above Full Mark (Overfilled) | Excess oil in crankcase. | Foaming (aerated oil), reduced lubrication efficiency, seal damage, catalytic converter damage. | Drain excess oil to proper level. Do not drive long-term while overfilled. |
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